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                        <span class="pk-color-title">arguments[] (函数参数数组)</span>
                        <span class="pk-float-right pk-tip">Core > Object > Arguments</span>
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                        <div class="pk-unit-tag">Description</div>
                        <pre>    arguments[]数组只定义在函数体中。在函数体中，arguments指代该函数的Arguments对象。该对象拥有数值属性，可当做数组来用，含有传人到该函数的所有参数。arguments标识符本质上是一个局部变量，在每个函数中会自动声明并初始化该变量。arguments仅在函数体中时才指代Arguments对象，在全局代码中为undefined。</pre>
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